header{
    position: fixed;
    top: 0;
    left: 0;    
    left: 0;
    z-index: 10;
    width: 100%;
    height: 69px;
    padding: 16px 0;
    background: rgba(255,255,255,.9);
    border-bottom: 1px solid #e6e6e6;
    box-shadow: 2px 2px 2px 2px #f3f3f3;
}
header:hover{
    background-color: #202e44;
}
header:hover .wrap>a{
    background: url(../img/logo.png) no-repeat;
    background-size: contain;
}
header .wrap{
    margin: auto;
    justify-content: space-between;
    display: flex;
    width: 1200px;
    height: 36px;
}
header .wrap>a{  
    width: 240px;
    height: 32px;
    background: url(../img/logo-black.png) no-repeat;
    background-size: contain;
}
header .wrap .right{
    width: 224px;
    height: 36px;
}
header .wrap .right ul{
    display: flex;
    align-items: center;
    width: 224px;
    height: 36px;
}
header .wrap .right li{
    float: left;
    width: 80px;
    height: 24px;
    line-height: 24px;
    text-align: center;
    margin-left: 40px;
}

header .wrap .right li:nth-child(2){
    width: 64px;
}
header .wrap .right li a{
    position: relative;
    display: block;
    font-size: 16px;
    color: #222222;
}
header:hover .wrap .right li a{
    color: #fff;
}
header .wrap .right ul li a:hover{
    color: #3090fb;
    text-decoration: underline;
}
header .wrap .right li a .box{
    position: absolute;
    top: 40px;
    left: 0px; 
    width: 80px;
    height: 2px;
    text-align: center;
}
header .wrap .right li a .box .under{
    /* 此使得线条位于中部向两边延展 */
    margin: auto;
    width: 0;
    transition: all .5s ease-out;
}
header .wrap .right li a:hover .box .under{  
    width: 80px;
    height: 2px;
    background-color: #3090fb;
}
header .wrap .right li:nth-child(2) a .box{
    width: 64px;
}
header .wrap .right li:nth-child(2) a:hover .box .under{
    width: 64px;
}
/* 内容区域 */
.content{
    margin: 104px auto;
    width: 1200px;
    height: 814px;
}
.content .title{
    width: 1200px;
    height: 57px;
    padding-bottom: 20px;
    margin-bottom: 5px;
    border-bottom: 1px solid #e6e6e6;
}
.content .title p{
    width: 1200px;
    height: 36px;
    line-height: 36px;
    font-size: 24px;
    color: #333333;
}
.content .caption{
    display: block;
    margin-top: 20px;
    margin-bottom: 30px;
    width: 1200px;
    height: 18px;
    line-height: 18px;
    font-style: 12px;
    color: #999999;
}
.content .item{
    display: flex;
    align-items: center;
    width: 1200px;
    height: 38px;
    margin-bottom: 30px;
    padding-left: 300px;
}
.content .item p{
    display: flex;
    justify-content: flex-end;
    float: right;
    padding-right: 8px;
    margin-left: -300px;
    width: 300px;
    height: 23px;
    font-size: 14px;
    color: #4c4c4c;
}
.content .item .fm-content{
    position: relative;
    width: 900px;
    height: 38px;
}
.content .item .fm-content input{
    width: 330px;
    height: 38px;
    padding: 9px;
    outline: none;
    font-size: 14px;
    line-height: 18px;
    color: #4c4c4e;
    border-radius: 2px;
    border: 1px solid #ccc;
}
.content div:nth-child(4) .fm-content input{
    width: 184px;
    margin-right: 20px;
}
.content div:nth-child(4) .fm-content a{
    position: absolute;
    top: -1px;
    left: 207px;
    border-radius: 4px;
    display: block;
    width: 122px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: #387ee8;
    color: #fff;
    font-size: 14px;
}
.content .clear{
    width: 1200px;
    height: 36px;
    padding-left: 300px;
}
.content .clear .yonghu{
    position: relative;
    width: 900px;
    height: 36px;
}
.content .clear .yonghu p{
    display: block;
    width: 900px;
    height: 18px;
}
.content .clear .yonghu p input{
    width: 13px;
    height: 13px;
    margin-right: 10px;
}
.content .clear .yonghu .zhuce{
    display: block;
    position: absolute;
    top: 65px;
    left: 0;
    width: 102px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: #387ee8;
    color: #fff;
    border-radius: 4px;
    font-size: 14px;
}
footer{
    padding-top: 55px;
    width: 100%;
    height: 230px;align-self: start;
}
footer .footer{
    margin: auto;
    width: 603px;
    height: 128px;
    color: #a0a0a0;
    text-align: center;
}
footer .footer .m-1,
footer .footer .m-2{
    font-size: 12px;
    color: #a0a0a0;
}
footer .footer .m-2{
    padding-top: 16px;
}
footer .footer p{
    margin-top: 20px;
}
footer .footer p a{
    color: #387ee8;
}
footer .footer p a:hover{
    text-decoration: underline;
}